Earmuff



FIG. 1 is a perspective view of my ornamental design;

FIG. 2 is a right side view of the embodiment in FIG. 1;

FIG. 3 is a left side view of the embodiment in FIG. 1;

FIG. 4 is a front view of the embodiment in FIG. 1;

FIG. 5 is a rear view of the embodiment in FIG. 1;

FIG. 6 is a top view of the embodiment in FIG. 1;

FIG. 7 is a bottom view of the embodiment in FIG. 1;

FIG. 8 is an isometric view of the embodiment in FIG. 1, installed on a human head;

FIG. 9 is a side view of the embodiment in FIG. 1, installed on a human head;

FIG. 10 is a top view of the embodiment in FIG. 1, installed on a human head; and,

FIG. 11 is a front view of the embodiment in FIG. 1, installed on a human head.

The broken lines of the human form in FIGS. 8 through 11 are directed to environment. The broken lines to the cord in FIGS. 1 through 9 and 11, the electronic device in FIG. 1 and the vent apertures with internal elements visible there-through in FIGS. 1 through 3, 5, 8, and 9 are included for the purpose of illustrating unclaimed features of the claimed design; the broken lines form no part of the claimed design. 

CLAIM The ornamental design for an earmuff, as shown and described. 